Achievement Guide for Secret Achievement

Achievement won on 15 Jun 14TA Score for this game: 2,075
Posted on 28 September 09 at 22:09, Edited on 12 July 14 at 12:20

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You have to kill ten critters (rats/cockroaches) in one play through. There are only 14 in the game, spread across 4 locations:

3 rats at the beginning of the game. You'll enter a tunnel and have to duck under a grate. The three rats are immediately behind the grate.

2 rats after being split up with your buddies and taking out the first couple of enemies in the sewer in "interval 1, underneath" (one of them is carrying a grenade launcher)

5 rats [2+3] in two adjoining dark rooms full of crates towards the end of "interval 4 - the deep"* "interval 4 - buried", shortly after confronting the invisible enemies with red eyes in a large squarish room that is flooded.

4 cockroaches while leaving the subway (this is not much further than the previous location). as you are climbing the stairs, on the left hand side is a civilian corpse on a bench. as you walk by, music plays and the cockroaches scurry away.

I've also made some images of the locations of the critters as well as the locations immediately before hand so you should be able to recognize them easier while playing.